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Finding the Fourth Proportional to 17,726.78, 26,575.05 and 7,860.67

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Solution

The fourth proportional to 17,726.78, 26,575.05 and 7,860.67 is: 11,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,726.78 : 26,575.05 = 7,860.67 : x
  2. Step 2: Convert to fraction form
    17,726.78/26,575.05 = 7,860.67/x
  3. Step 3: Cross multiply
    17,726.78x = 26,575.05 × 7,860.67
  4. Step 4: Simplify right side
    17,726.78x = 208,897,698.28
  5. Step 5: Solve for x
    x = 208,897,698.28/17,726.78
  6. Step 6: Final answer
    x = 11,784.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.